## CryptoDB

### Paper: A Compact and Scalable Hardware/Software Co-design of SIKE

Authors: Pedro Maat C. Massolino , Radboud University, Nijmegen, The Netherlands Patrick Longa , Microsoft Research, USA Joost Renes , Radboud University, Nijmegen, The Netherlands Lejla Batina , Radboud University, Nijmegen, The Netherlands DOI: 10.13154/tches.v2020.i2.245-271 URL: https://tches.iacr.org/index.php/TCHES/article/view/8551 Search ePrint Search Google Slides We present efficient and compact hardware/software co-design implementations of the Supersingular Isogeny Key Encapsulation (SIKE) protocol on field-programmable gate arrays (FPGAs). In order to be better equipped for different post-quantum scenarios, our architectures were designed to feature high-flexibility by covering all the currently available parameter sets and with support for primes up to 1016 bits. In particular, any of the current SIKE parameters equivalent to the post-quantum security of AES-128/192/256 and SHA3-256 can be selected and run on-the-fly. This security scalability property, together with the small footprint and efficiency of our architectures, makes them ideal for embedded applications in a post-quantum world. In addition, the proposed implementations exhibit regular, constant-time execution, which provides protection against timing and simple sidechannel attacks. Our results demonstrate that supersingular isogeny-based primitives such as SIDH and SIKE can indeed be deployed for embedded applications featuring competitive performance. For example, our smallest architecture based on a 128-bit MAC unit takes only 3415 slices, 21 BRAMs and 57 DSPs on a Virtex 7 690T and can perform key generation, encapsulation and decapsulation in 14.4, 24.4 and 26.0 milliseconds for SIKEp434 and in 52.3, 86.4 and 93.2 milliseconds for SIKEp751, respectively.
##### BibTeX
@article{tches-2020-30161,
title={A Compact and Scalable Hardware/Software Co-design of SIKE},
journal={IACR Transactions on Cryptographic Hardware and Embedded Systems},
publisher={Ruhr-Universität Bochum},
volume={2020, Issue 2},
pages={245-271},
url={https://tches.iacr.org/index.php/TCHES/article/view/8551},
doi={10.13154/tches.v2020.i2.245-271},
author={Pedro Maat C. Massolino and Patrick Longa and Joost Renes and Lejla Batina},
year=2020
}